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| author | Jianxin Xiong <jianxin.xiong@intel.com> | 2020-11-10 13:41:17 -0800 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-11-11 17:30:39 +0100 |
| commit | 476b485be03c37212fcf10d85510aae5d34316ef (patch) | |
| tree | ea564526583bb9bb2c8247a59fbcdbaca14468a1 /include/linux/dma-buf.h | |
| parent | abec017c3d1f47edf7d1e48a2ed45f0e69413a80 (diff) | |
| download | lwn-476b485be03c37212fcf10d85510aae5d34316ef.tar.gz lwn-476b485be03c37212fcf10d85510aae5d34316ef.zip | |
dma-buf: Document that dma-buf size is fixed
The fact that the size of dma-buf is invariant over the lifetime of the
buffer is mentioned in the comment of 'dma_buf_ops.mmap', but is not
documented at where the info is defined. Add the missing documentation.
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1605044477-51833-7-git-send-email-jianxin.xiong@intel.com
Diffstat (limited to 'include/linux/dma-buf.h')
| -rw-r--r-- | include/linux/dma-buf.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index 03875eaed51a..cf72699cb2bc 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -273,7 +273,7 @@ struct dma_buf_ops { /** * struct dma_buf - shared buffer object - * @size: size of the buffer + * @size: size of the buffer; invariant over the lifetime of the buffer. * @file: file pointer used for sharing buffers across, and for refcounting. * @attachments: list of dma_buf_attachment that denotes all devices attached, * protected by dma_resv lock. @@ -405,7 +405,7 @@ struct dma_buf_attachment { * @exp_name: name of the exporter - useful for debugging. * @owner: pointer to exporter module - used for refcounting kernel module * @ops: Attach allocator-defined dma buf ops to the new buffer - * @size: Size of the buffer + * @size: Size of the buffer - invariant over the lifetime of the buffer * @flags: mode flags for the file * @resv: reservation-object, NULL to allocate default one * @priv: Attach private data of allocator to this buffer |